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 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
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 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
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package com.sun.enterprise.admin.server.core.mbean.config;

//JMX imports
import javax.management.DynamicMBean;
import javax.management.AttributeList;
import javax.management.MBeanInfo;
import javax.management.Attribute;
import javax.management.AttributeNotFoundException;
import javax.management.MBeanException;
import javax.management.ReflectionException;
import javax.management.InvalidAttributeValueException;

//i18n import
import com.sun.enterprise.util.i18n.StringManager;
/* New for 8.0 */
import com.sun.enterprise.admin.server.core.jmx.Introspector;
import java.lang.reflect.Method;
/* New for 8.0 */

/**
    The base class for all the MBeans. Note that there will be no MBean that
	is registered in the MBeanServer for this class. It serves as the base class
	of all concrete implementations of MBeans.
 
*/

public abstract class AdminBase implements DynamicMBean
{
	// i18n StringManager
	private static StringManager localStrings =
		StringManager.getManager( AdminBase.class );

    protected AdminBase() {
    }

    public Object getAttribute(String attributeName) throws
        AttributeNotFoundException, MBeanException, ReflectionException {
	String msg = localStrings.getString( "admin.server.core.mbean.config.getattribute_not_implemented" );
        throw new UnsupportedOperationException( msg );
    }

    public AttributeList getAttributes(String[] attributeNames) {
	String msg = localStrings.getString( "admin.server.core.mbean.config.getattribute_not_implemented" );
        throw new UnsupportedOperationException( msg );
    }

    public MBeanInfo getMBeanInfo() {
        String msg = localStrings.getString( "admin.server.core.mbean.config.getmbeaninfo_not_implemented" );
        throw new UnsupportedOperationException( msg );
    }

    /** Abstract method that subclasses have to implement. This is the way for
     * invoke method to work, through reflection.
    */
    protected abstract Class getImplementingClass();

    /** Reflection requires the implementing object. */
    protected abstract Object getImplementingMBean();   

    /**
     * Every resource MBean should override this method to execute specific
     * operations on the MBean. This method is enhanced in 8.0. It was a no-op
     * in 7.0. In 8.0, it is modified to invoke the actual method through
     * reflection. It relieves all the subclasses to implement the invoke method
     * for various operations. If the subclasses choose to implement it, they may
     * do so.
     * @since 8.0
     * @see javax.management.MBeanServer#invoke
     * @see #getImplementingClass
    */
    public Object invoke(String methodName, Object[] methodParams,
        String[] methodSignature) throws MBeanException, ReflectionException {
    /* New for 8.0 */
        final Class implClass = getImplementingClass();
        final Object mbeanReference = getImplementingMBean();
        final Introspector    reflector       = new Introspector(implClass);
        Object value = null;
        try {

            final Method method = reflector.getMethod(methodName, methodSignature);
            value = reflector.invokeMethodOn(method, mbeanReference, methodParams);
            return ( value );
        }
        catch (java.lang.ClassNotFoundException cnfe) {
            throw new javax.management.ReflectionException(cnfe);
        }
        catch (java.lang.NoSuchMethodException nsme) {
            throw new javax.management.ReflectionException(nsme);
        }
        catch (java.lang.SecurityException se) {
            throw new javax.management.ReflectionException(se);
        }
        catch (java.lang.reflect.InvocationTargetException ite) {
            Throwable t = ite.getTargetException();
            if (t instanceof MBeanException) {
                throw (MBeanException)t;
            }
            else
                if (t instanceof Exception) {
                    throw new MBeanException((Exception) t);
                }
                else { //if an error 
                    String msg = localStrings.getString( "admin.server.core.jmx.error_from_mbean", t.getMessage() );
                    RuntimeException re = new RuntimeException( msg );
                    throw new MBeanException(re);
                    //Do what?
                }
        }
        catch (java.lang.IllegalAccessException iae) {
            throw new javax.management.ReflectionException(iae);
        }
        catch (Exception e) {
            throw new MBeanException(e);            
        }
    /* New for 8.0 */
    }

    public void setAttribute(Attribute attribute) throws
        AttributeNotFoundException, InvalidAttributeValueException,
        MBeanException, ReflectionException {

        String msg = localStrings.getString( "admin.server.core.mbean.config.setattribute_not_implemented" );
        throw new UnsupportedOperationException( msg );
    }

    public AttributeList setAttributes(AttributeList parm1) {
	String msg = localStrings.getString( "admin.server.core.mbean.config.setattributes_not_implemented" );
        throw new UnsupportedOperationException( msg );
    }
}